1111021302123 has 12 divisors (see below), whose sum is σ = 1638953410848. Its totient is φ = 724921700400.

The previous prime is 1111021302119. The next prime is 1111021302169. The reversal of 1111021302123 is 3212031201111.

It is not a de Polignac number, because 1111021302123 - 2² = 1111021302119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111021302096 and 1111021302105.

It is not an unprimeable number, because it can be changed into a prime (1111021303123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1313263528 + ... + 1313264373.

It is an arithmetic number, because the mean of its divisors is an integer number (136579450904).

Almost surely, 2^{1111021302123} is an apocalyptic number.

1111021302123 is a deficient number, since it is larger than the sum of its proper divisors (527932108725).

1111021302123 is a wasteful number, since it uses less digits than its factorization.

1111021302123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626527954 (or 2626527951 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1111021302123 its reverse (3212031201111), we get a palindrome (4323052503234).

The spelling of 1111021302123 in words is "one trillion, one hundred eleven billion, twenty-one million, three hundred two thousand, one hundred twenty-three".